Study on supercritical hydrothermal synthesis of CoFe2O4 nanoparticles
文献类型：期刊论文
| 作者 | D. Zhao ; X. Wu ; H. Guan ; E. Han |
| 刊名 | Journal of Supercritical Fluids
 |
| 出版日期 | 2007 |
| 卷号 | 42期号:2页码:226-233 |
| 关键词 | supercritical water hydrothermal synthesis cobalt ferrite nanoparticles sol-gel method cobalt ferrite particles manganese zinc ferrites magnetic-properties air oxidation coprecipitation method ultrafine particles oxide nanoparticles aqueous suspensions bearing ferrite |
| ISSN号 | 0896-8446 |
| 中文摘要 | CoFe2O4 nanoparticles with diameter of about 5 nm were prepared at 390 degrees C by batch supercritical hydrothermal synthesis method. It was found that the characteristic of products depended on pH, temperature, mole ratio (r) of Co2+ to Fe3+ and coexisting cations in reactant solutions. The reaction time and the coexisting cations (Na+ and K+) had little effect on the size and morphology of CoFe2O4 particles. The products were a mixture of CoFe2O4 and Fe2O3 at r < 0.5 and Co1+xFe2-xO4 (0 <= X <= 1) at r >= 0.5. Pure CoFe2O4 nanoparticles with uniform size were synthesized at 390 degrees C, pH 12 and r = 0.5. The maximum coercivity and saturation magnetization of CoFe2O4 prepared by the present method were 340.6 Oe and 68.9 emu/g, respectively. The mechanism for batch supercritical hydrothermal synthesis of CoFe2O4 nanoparticles is believed to be a homogeneous phase reaction of Co(NO3)(2)center dot 6H(2)O and Fe(NO3)(3)center dot 9H(2)O aqueous solution. (c) 2007 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34065]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | D. Zhao,X. Wu,H. Guan,et al. Study on supercritical hydrothermal synthesis of CoFe2O4 nanoparticles[J]. Journal of Supercritical Fluids,2007,42(2):226-233. |
| APA | D. Zhao,X. Wu,H. Guan,&E. Han.(2007).Study on supercritical hydrothermal synthesis of CoFe2O4 nanoparticles.Journal of Supercritical Fluids,42(2),226-233. |
| MLA | D. Zhao,et al."Study on supercritical hydrothermal synthesis of CoFe2O4 nanoparticles".Journal of Supercritical Fluids 42.2(2007):226-233. |
入库方式： OAI收割
来源：金属研究所
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